Duplicating-machine.



PATENTED MAR. 27, l1906.

H. C.' GAMMEI'ER. DUPLIGATING MACHINE.

3 SHEETS AIYPLICATION FILED MARI?. 1903 PATENTBD MAR. 27 H. C. GAMMETER. l DUPLICATING MACHINE.

APPLICATION FILED MAB..7, 1903.

3 SHEETS-SHEET 2.

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PATBNTED MAR. 27, 1906.

H. C. GAMMETBRL DUPLICATIYNG MACHINE.

APPLICATION FILED MAR-7, 1903.

3 SHEETS-SHEET 3.

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HARRY C. GAMMETER, OF CLEVELAND, OHIO, ASSIGNOR' TO THE AMERICAN MULTIGRAPH'COMPANY, OF CLEVELAND, OHIO, A

CORPORATION OF OHIO.

DUPLIGATING-VNIACHINE.

Specification of Letters Patent.

Patented March 27, 1906.

To all' whom it may concern,.- s.

Be it known that I, HARRY C'. OAMMETER, a citizen. of theUnited States, residing at leveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Duplicating- Machines, of which the following is a full, clear, and exact description, reference being had to. the accompanying drawings.

The object of this invention is to provide an efficient machine for producing circular letters or similar matter in large quantities,

particularly in making many copies of letters I which shall have all the appearance of having been individuallyT written upon the typewriter.

The complete machine, which is an improvement on the machine shown in my Patent No.- 722,404, issued to me March l0, 1903, includes a supply-drum for containing the type arranged in lines ofthe saine letter, a printing-drum, transferring mechanism for conveying the type individually from the supply-drum to the printing-drum to make words and spaces, and for distributing it from the printing-drum to the supply-drum, and a pair of finger-keys for operating the transferring mechanism accordingly. After the type has been assembled on the printingdrum an inked ribbon is placed around it and the drum is continuously rotated, the paper to be printed being automatically fed between it and an impression-platen. of assemblingtype and distributing type are covered in my application, Serial No. 196,840, filed March 7, 1004, (and renewed as No. 297,447) andthe automatic paper-feeding is covered in my Patent No. 812,735, issued February I8, 1906.

The present application is concerned` with the inking-ribbon spools 4and their'driving mechanism. For a clearer understanding of the machine, however, I will describe other parts of the complete machine as shown in the drawings.

In the drawings, Figure 1 is a side elevation of a complete machine embodying the present invcition, except that the feed-table and the Ihiking-ribbon are omitted. Fig. 2 is a side elevation, partly broken away and partly in central section. 3 is a crosssection through the. printing-drum. Fig. 1

is a detail in plan, showing the transfer meln-,v

. frame.

The features ber. Fig. 5 is a perspective view of one of the printing-type.

The supply-drum as a Whole`is designated 1, and the printing-drum 2. They are arranged so that the type'ordinarily stored on the supply-drum may be transferred as desired to the printingrdruin. A satisfactoryway to do this is to have the two drums.

arranged as shown in the drawings, Wherein they are ofthe sameperiphery and are placed 'with their axes in alinement. The drum 1 consists of a series of bars 10, mounted longitudinally around spiders 3 and 4, secured to a shaft 5, which is journaled in the uprights 6 and 7 of the frame.

The printing-drum has a body portion, (designated 2,) which is a portion of a cylinder, preferably about three-quarters. ward. flanges or spiders 8 on this body portion secure the drum to a shaft 9, which .is mounted in the vertical standards y7 and 11 of the Into radial grooves in the peripheral wall of the drum 2 are set the rails 12, having enlarged and rounded 'outer edges, these rails being similar to the rails '10, which constitute the periphery of the drum. The type 13 are of the form shown in Fig. 10, having across them holes 14 communicatin with their feet. The type are thus slippe over'the various rails I0 and are normally retained thereon. This fornrof rail and type I have found to be especially satisfactory in practice.

When it is desired to assemble on the printing-drum 2 the matter to be printed, the supply-drum is rotated until the rail 10, carrying the proper letter, comes into a certain position-namely, the uppermost position in the machine shown-whereupon the drum is is shifted to the printing-drum, and so' on.

" locked and the typeis shifted to the printi As soon as a complete ,line is thus set up on one of the rails 12 of the printing-drum this drum is turned to bring another rail intopoy sition.

In this manner t'ype for a Whole page is set up on the periphery of the drum.

. As hereinafter more fully explained, an inked sheet of fabric or ribbon is now wra ped aroundl thek drum over the type, andp the granting-drum is then continuously rotated' y a crank, operating t' print onpaper drawn rob is accomplished by lollmaling its Sup;

`porting-spiders 88 on circular. bosses 89,

which are carried eccentricall on-a shaft 90, journaled in blocks 91,- slidab e in the framestandards. The blocks are themselves adjusted by set-screws 92. Then the impression-roller is more 'accurately adjusted by slightly turnin the shaft 90 by means of its .'crank 93, whic isadapted to be locked by havin a lug springing into notches in a segymenta guard 94. By this' means, which is one after another upon the table 95, of which a portion is shown 1n Fig. 3, the front edge of the paper coming between the soft rollers 96 and 97, the latter being geared with a pinion 98, which is adapted to be engaged by a short rack 99, carried by the printing-drum.

When this rack engages, these rollers 97 and 98 are revolved to draw the paper between them, so that it strikes the impression-drum and is drawn between it and the soft roller 100, and then between the impression-drum and printing-drum, and finally delivered onto the table 101. The rollers 96, 97, and 100 are carried by pivoted arms 87, of which one appears in Fig. 3, which arms are `adjusted by set-screws 84. The inion 98 is also carried. by 'the arm 87. (S own in Fig. 3.)

The rack 99, which operates the pinion 98, is formed o7` a band 103 which passes around the drum' and may be locked at any desired point, as by the set-screw 104. It Yis so placed that the paper is fed between the printmg and impression rolls while that portion of the printing-drum which is not carrying the -drawings considerable space is allowed for the blank head of the page.

` each rotation of the printing-drum at a time when the machine is not actually making an impression by means of the star-wheel 105, which is carried by a bell-crank lever 106, pivoted to the printing-drum, and isconnected by a gear 107 'to the pinion 108. This pinion is caused to engage with the gear79 or the gear 80, as may be desired, by pressing the pin 109, carried by the lever, in one direction or 1the other, a spring 110 .locking it in place. Fig. 3 showsthe lever and the starwheel mechanism in an intermediate position out of engagement with either spool. In this position the star-wheel does not engage an 7thing in its rotation. When it is in eit er extreme position, however, the starwheel for each rotation engages either the pin 112 or the pin 113,-carrie d by the frame, and is Tpe is rotating past the impression-roller.

The ribbon 71 is shifted slightly once for.

turned one tooth thereby. If the former, the spool 74 is rotated to wind the ribbon onto it and from the spool 73. If the latter, the reverse operation takes place, 7 3 being wound u v pAfter the desired number ofvcopies have been printed by the machine the ribbon is removed and the type is distributed from the rinting-drum back onto the supply-drum liy an operation which is simply the reverse` ofthe assembling operation, viz: The printing-drum -is set by the crank 61 so that the first line 'is in alinement with the transferhead 17 and the supply-drum is turned to bring into alinement that rail thereon which corresponds with the end type from the assembled line.

` When the supply-drum is in' proper receiv- I moves the pin 31 toward the supply-drum when the key 115 is actuated, and this draws the toothed bar'. 117 in that'direction, and this toothed bar engages a tooth 121 on the follower '118, supported i by the grooved trackway 123l on the frame member 3 5. The follower has a awl 120 wherefore the movement of the fol ower shoves the whole line to the left, lshoving the end ty e into the head 17, after which the further epression of the -key rotates the 'head to turn the type into alinemen't with the rail of the supply-drum.

The removable ribbon-spools, the feeding of the ribbon, and the adjustment of the impression-platen to give just the right impression irrespective of the thickness of the paper or the amount the ribbon mayhave been worn are the features covered in this application. In the form shown they have been demonstrated to be very efficient; but modiicat'ions thereof may be made within the scope of my invention as set out in the claims herein.

l. claim 1; In a duplicating-machine, the combination4 of a printing-drum adapted to carry rows. of type on its surface, a pair of -spools carried by said drum and adapted to carry a ribbon passing around the printing-face, f

mechanism for. driving one of said spo'ols to feed the ribbon, said spool being separable from the driving mechanism, and a spring for causing engagement therewith, substantially vas described..

2. `In a duplicating-machine, the combina- IIO tion of a printing-drum having arecess therein, a pair of spools mounted in said recess, and adapted to carry a ribbon passing .around 'the drum, mechanism for 4driving In e duplicating-meebne, the combine- 'mon oi epnutmg'drum having Teeess weee'- n, e pair of oigtudne spools mounted in.

said recess and indebted no carry e lbbom for the rmtmU-drum eroteteble dxwmffmecnfemsm earned by the (b'umwtn Wmebit one of the spools engages at one enrbend e. sp1 yy sepzuab e therefrom, eed e spring tending to' cause engagement between secbbody and heed, substemley as deserlbed.

5. in e dupheetnu-meehme, the eombmef tion of plnting(irum adapted tol eww' rows of type on its surface, pair of spools eared by seid drum and edepted to emy e. ribbon passing around the melting-fece,said spools each consisting' of e bodymld e he a?. separable therefrom, springs tending no em, engagement beiween said. bodies and heads,

and means for tuning beads es 'the deem "roe on its s i ,L le dii-um and ed@ med be een); ooe enemigo. the pmg-'f vseid spo@ ng of e. bony emi separable tbeen'rom efr means of en eng/gum shank. Formeel; oil between the body and the eff; o

heed, ell/ .means for eutomatexy teeming 'the heed is the dlum rotates, substeniej! 7. 7 eetngmmchne, tbe eombino- Lion of e y Ned by sind drum and eoepted to eel'y a. 0' mound the drum,

ojo seid ege, one on one side of bhe may e110 1 el and one e oteo. Le one of the arms ehe druxyand beveg on one eem d nermedate end on the o ,15 sterm'bee, end :1- handle eer emu i d one of seid :irme for shifting it, @miei wmbed.

hereof hereunto e'x my mauve ie tbe pyeseuee of two witnesses.

HA R RY C. GAIIVI ETE H. BATES, Je. 5eme/m.

' pins with, 'either of which seid seein n the other, e beni; leve-. pv-y 

